In one of the 'I got my 9900' threads over the weekend (forget who it was) he posted a picture of a T-Mobile branded 9900 with '4G' labeled in the upper right corner. He said when 4G/3G isn't available it switches to EDGE.

In one of the 'I got my 9900' threads over the weekend (forget who it was) he posted a picture of a T-Mobile branded 9900 with '4G' labeled in the upper right corner. He said when 4G/3G isn't available it switches to EDGE.

So in the real world then... when 3.5G/3G isn't available it drops to 2.5G/2G